Fo' Shizzle, Govna!
In an article on the globalization of slang, the London Observer's Miranda Sawyer notes the fuzzing of class-defining accents in Britain:
As late as the early Eighties, more than 60 per cent of the UK population had never lived more than a dozen miles from where they were born: this no longer holds. Another recent development is that we're all anxious not to appear too posh; even upper-class people speak less correctly than 30 years ago. Weirdly, the middle and working classes used to have broader accents; now there's a linguistic levelling that's taking place across the country.